SS1 WEEK: 6 TOPIC: COMPUTER INPUT DEVICES

An Input Device is any computer hardware equipment used to feed or send data into the main storage of a computer for processing. Many input devices can be classified into two:  Modality of input( e.g mechanical motion, audio, visual etc)  The input is discrete (keyboard) or continuous (mouse’s position) TYPES OF INPUT DEVICES I. Modern Input Devices a. Camera b. Compact disc (CD) c. Keyboard d. Mouse e. Scanner f. Joystick g. Barcode Scanner h. Microphone i. Etc. II. Earliest Input devices a. Punch Card b. Card Reader c. Punched paper Tape d. Magnetic Tape unit e. Optical Character Recognition f. Etc. THE KEYBOARD: The keyboard is an input device which is used to input data into the computer system. Keyboard remains the most vital interface between the user and the computer. It is the most common input device for entering data into the computer. Keyboard is an electronic device with several groups of keys electronically linked to the processor when attached to a computer system. TYPES OF KEBOARD: There are two main types of keyboard 1. Standard keyboard 2. Enhanced keyboard Features of Standard keyboard I. It has 10 function keys II. It has four arrow keys III. It has 84-89 keys in all Features of Enhanced keyboard I. It has 12 function keys (F1-F12) II. It has 8 arrow keys III. It has 101-105 keys in all